This is correct. Make sure to put a space after the comma that comes after Daises though.
As a student, completing your homework, doing well on tests, and trying your hardest in school will prepare you for future work. Completing work as a high school student will make it easier to complete work as a college student. Being able to put in effort in completing work, will make you a better student and will make it easier to do tasks in the future.
Its either a or c not for sure but leaning towards c
B “there,” he said. “There is something for you.”